Quoted from ForceFlow:The upside of streaming is convenience, however, the downside of streaming is that titles can come and go, and a particular movie you might want to watch might not be available. So, the upside of a collection is that you can play them anytime you like. The downside is, of course, they take up space.
I have a handful of movies that have not been made available on streaming services, as far as I'm aware.
Yup, good points. Plus you actually don't own the film streaming it, there are typically no extras, the video quality is lower and the same uncompressed audio tracks found on Blu Ray's are not present. Also, you never have to rely on an internet connection with a Blu-ray and worry about your internet being out or the movie buffering.
If you invested in a nice video and audio upset it's well worth it to watch the Blu-ray. I still like buying movies but I'm now more selective with what I buy and wait for sales (or buy used).